These aren't the cheapest smart bulbs you can buy, but Osram's Lightify LED Starter Kit is more affordable than Philips or Belkin's, and arguably more feature-rich, too. As a legitimate competitor, it deserves consideration.

With its large lithium ion battery and variety of charging cable adapters, the Bolt Power D28 makes an excellent charging solution for a variety of devices, including laptops, and a must-have for cars with finicky batteries.